FEM: How to input loads in lb/in/ft (building)

About the development of the FEM module/workbench.

Moderator: bernd

seedhom
Posts: 3
Joined: Thu Sep 10, 2020 4:07 pm

FEM: How to input loads in lb/in/ft (building)

Postby seedhom » Wed Sep 16, 2020 3:56 pm

While my design was created in US Building/Arch units (lb/ft/in) and the preference was set for this, FEM load input only seems to accept kg/mm^2 units. How can I change that?

OS: Windows 10
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.18.4 (GitTag)
Build type: Release
Branch: releases/FreeCAD-0-18
Hash: 980bf9060e28555fecd9e3462f68ca74007b70f8
Python version: 3.6.6
Qt version: 5.6.2
Coin version: 4.0.0a
OCC version: 7.3.0
Locale: English/UnitedStates (en_US)
Last edited by seedhom on Wed Sep 16, 2020 5:05 pm, edited 1 time in total.
Thank You

Al
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Kunda1
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Re: FEM: How to input loads in lb/in/ft (building)

Postby Kunda1 » Wed Sep 16, 2020 5:00 pm

Mod edit: Moved to FEM subforum
OP please always post you About info when seeking assistance. Thank you.
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Jee-Bee
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Joined: Tue Jun 16, 2015 10:32 am
Location: Netherlands

Re: FEM: How to input loads in lb/in/ft (building)

Postby Jee-Bee » Thu Sep 17, 2020 12:06 pm

I don't think it is possible. http://www.feacluster.com/CalculiX/ccx_ ... node4.html stated Caclulix is SI unit only.
Which means FC have to do the conversions.
As all current FC FEM users use SI units i think you have to calculate it or you have to implement it
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bernd
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Location: Zürich, Switzerland

Re: FEM: How to input loads in lb/in/ft (building)

Postby bernd » Thu Sep 17, 2020 1:53 pm

This depends if the FreeCAD FEM object ui supports FreeCAD unit system. In pressure object for example you should be able to input imperial units. In force object this is for sure not possible.